Source Images
Over
Neutral
Under
Final Image
Tuesday, May 3, 2011
Project – High Dynamic Range Imagery
Project – High Dynamic Range Imagery
Source Images
Over
Neutral
Under
Final Image
Source Images
Over
Neutral
Under
Final Image
Sunday, April 3, 2011
Colour Management #3- Calibrating and Profiling a Display Device
Colour Management #3 - Calibrating and Profiling a Display Device
Calibration #3
5.4.2011
Task: To be respoinsible for maintaining the calibration and profiling of one of the display devices in the photography area for the remainder of this semester. This will involve carrying out an initial calibration/profiling exercise which will be reviewed in class in week 11 followed by three more follow up calibration/profiling exercises at regular intervals during the semester.
Calibration #3
5.4.2011
Task: To be respoinsible for maintaining the calibration and profiling of one of the display devices in the photography area for the remainder of this semester. This will involve carrying out an initial calibration/profiling exercise which will be reviewed in class in week 11 followed by three more follow up calibration/profiling exercises at regular intervals during the semester.
Image Stitching Digital Panorama
Image Stitching Digital Panorama Task: To take at least three images of a scene suitable for stitching into a single image. Using appropriate software you must stitch the images to form a single seamless image. Crop or frame the image to a rectangle. Location: Lake Ginninderra Single Images Completed Stitched Panorama 
Week 7 : 30.3.2011 - Class w/ Lindi Holly - Pressentations
Week 7 : 30.3.2011 - Class w/ Lindi Holly - Pressentations
Lindi Holly took today's class and we watched more Editing technique pressentations.
Lindi Holly took today's class and we watched more Editing technique pressentations.
Colour Management #2 - Calibrating and Profiling a Display Device
Colour Management #2 - Calibrating and Profiling a Display Device
Calibration #2
22.3.2011
Task: To be respoinsible for maintaining the calibration and profiling of one of the display devices in the photography area for the remainder of this semester. This will involve carrying out an initial calibration/profiling exercise which will be reviewed in class in week 11 followed by three more follow up calibration/profiling exercises at regular intervals during the semester.
Calibration #2
22.3.2011
Task: To be respoinsible for maintaining the calibration and profiling of one of the display devices in the photography area for the remainder of this semester. This will involve carrying out an initial calibration/profiling exercise which will be reviewed in class in week 11 followed by three more follow up calibration/profiling exercises at regular intervals during the semester.
Week 6 : 23.3.2011 - no class
Week 6 : 23.3.2011 - no class
Today we didn't have a class but did have a fantastic guest speaker Alexia Sinclair come in to talk about her career in photography.
Today we didn't have a class but did have a fantastic guest speaker Alexia Sinclair come in to talk about her career in photography.
Week 5 : 16.3.2011 - HDR & HDR ex.
Week 5 : 16.3.2011 - HDR & HDR ex.
HDR - High Dynamic Range
Captures Highlights, Shadows and midtones
HDR - High Dynamic Range
Captures Highlights, Shadows and midtones
Wednesday, March 9, 2011
Week 4 : 9.3.2011 - Editing Techniques Presentations
Week 4 : 9.3.2011 - Editing Techniques Presentations This week we submitted our calibration reports and also had a one on one discussion with Geoff about our first monitor calibration. We also watched our class mates present there editing techniques. This included:
- Picasu
- Editing between lightroom and photoshop
- Lightroom Presets
- Editing high contrast images
It was very interesting and helpful to learn from my class mates about some different editing techniques.
Tuesday, March 8, 2011
Tuesday, March 1, 2011
Colour Management #1 - Calibrating and Profiling a Display Device
Colour Management #1 - Calibrating and Profiling a Display Device
Calibration #1
2.3.2011
Task: To be respoinsible for maintaining the calibration and profiling of one of the display devices in the photography area for the remainder of this semester. This will involve carrying out an initial calibration/profiling exercise which will be reviewed in class in week 11 followed by three more follow up calibration/profiling exercises at regular intervals during the semester.
Before Calibration
After Calibration
ICC Profile Location
Results/Observations:
The ambient light is not ideal. There is a window directly behind the computer as well as overhead lights. The ambient light readings indicated that the colour temperature was slightly to warm. This would be due to the overhead lights but the window light seems to cool this down in comparison to some computers at the front of the classroom facing away from the window are considerably warmer. The illuminance is also too bright in this circumstance.
From the summary given we can see that the target temperature and gamma were both achieved. The graph shows that the red values are correct where as the blue and green values are not ideal.
Calibration #1
2.3.2011
Task: To be respoinsible for maintaining the calibration and profiling of one of the display devices in the photography area for the remainder of this semester. This will involve carrying out an initial calibration/profiling exercise which will be reviewed in class in week 11 followed by three more follow up calibration/profiling exercises at regular intervals during the semester.
1. Each person will be allocated a monitor.
2. You will set the desktop of your allocated computer to the ‘Grey Desktop’ image (available on eLearn).
3. You will perform an initial calibration/profiling of your allocated device and post the results on your blogs before start of class week 4 (9th March). We will review the results in class.
4. You will profile again and post the results by week 6 (23rd March).
5. You will profile again and post the results b
y week 11 (11th May).
6. Each time you create a profile you will -
- Capture a screen image showing the results of the calibration ( see below).
- Name the profile ‘YourName_LCD_Monitor_yymmdd.icc’
- Apply the profile to the student login.
Device Used: i1 X-Rite Display
Software: i1 Match
Date Calibrated: 2/3/2011
Settings:
- Advanced Calibration
- Monitor Type: LCD
- White Point: Medium White 6500
- Gamma: 2.2 - Recommended
- Luminance: No change
- Perform Ambient Light Check
- Calibrate
Screen Prints
Ambient Light
Colour Temperature: 4200k (Slightly too warm)
Illuminance: 495 (too light)
Calibration Summary
Before Calibration
After Calibration
ICC Profile Location
Results/Observations:
The ambient light is not ideal. There is a window directly behind the computer as well as overhead lights. The ambient light readings indicated that the colour temperature was slightly to warm. This would be due to the overhead lights but the window light seems to cool this down in comparison to some computers at the front of the classroom facing away from the window are considerably warmer. The illuminance is also too bright in this circumstance.
From the summary given we can see that the target temperature and gamma were both achieved. The graph shows that the red values are correct where as the blue and green values are not ideal.
Week 3 : 2.3.2011 - Lightroom & Stictching
Week 3 : 2.3.2011 - Lightroom & Stitching
What is the purpose of lightroom?
It is a capture tool, workflow tool, a cataloguing system, minor editing and output.
Catalogue vs Browser: A catalogue is a database. Can look at metadata. To use something in catalogue you have to import and then software finds information about file and stores in the database.
All editing in lightroom is non-destructable. Doesn't apple changes to images just records what you have done. Can work on any file type eg. jpg, raw.
Don't need to have multiple files (saves of edits) just have the source file imported into lightroom.
Lightroom Handout
| Adobe Lightroom 3 – Develop Module |
Adobe Lightroom is a catalogue based digital workflow program. It enables you to import, organise, process and output your images.
- Zero all the image controls
- Chromatic Aberration – zoom to 100%
- Usually check the Red/Cyan fringe, the Blue/Yellow correction is not usually needed
- Defringe – removes purple blooming around blown out highlights
- Tonal Correction - Adjust Exposure / Recovery / Fill Light / Blacks / Brightness / Contrast – to optimise the histogram
- White Balance - Adjust Colour Temperature & Tint – preferably using a White Balance card in a test image.
- Tone Curve – use to fine tune the tonal corrections
- Noise Reduction – for the darkest parts of the image – NB Causes loss of image detail !
- Luminance – smooths out the brightness of the image without altering the colour
- Colour – evens out colour variation to remove the colour speckles due to high ISO settings + low exposure
- Presence –
- Saturation – Increases the richness or intensity of the colours – oversaturation leads to posterisation effects.
- Vibrance – increases the saturation of unsaturated tones, but tries to leave skin tones alone ie a ‘smarter’ saturation control.
- Clarity - = Acutance – sharpens local detail and increases local contrast. Mainly affects the midtones.
- Sharpening – this is applied to the Luminance channel -
- Amount – the strength of the sharpening,
- Radius – the no. of pixels used to locate an edge,
- Detail – Acutance / local contrast,
- Masking – the edge mask that determines which parts of the image are sharpened – Hold down Option key and drag the Masking slider – White = applied, Black = No change
Stitching
Problems:
- Lens distortion
- Misaligned images
- Changing scene eg clouds, water, people
- Tonal variation
- Paralax Error
Can stitch vertical/as a grid / sphere
Shoot in portrait or landscape
Panorama Tools
Lens: Use prime lenses, Geoff uses 10-22mm
Paralax Error: Background moves relative to any objects in the foreground. Special tripods can fix this problem.
Wednesday, February 23, 2011
Week 2 : 23.2.2011 - Colour Calibration
Week 2 : 23.2.2011 - Colour Calibration
Colour Management – Questions
1. What is the purpose of colour management ?
To maintain consistent colour appearance across different devices and throughout the working process.
2. What problem makes colour management necessary ?
Different devices each have a different gamut, this is the range of colours that a device can produce.
3. What are the components of a device profile (ie what information do they contain) ?
The colour gamut of that device and the instructions which can be used to convert a colour space into or out of that gamut.
4. What is the difference between a device profile and a working space ?
A device profile relates specifically to a device and the colour space it uses is the gamut of the device. The working space is a range of colours that doesn’t specifically relate to a device.
5. What is a ‘reference colour space’ and how are they used ? Give an example of one.
This is a defined device independent space that is used as a reference point in the convertion process between two colour spaces.
6. What is the difference between ‘calibrating’ and ‘profiling’ ?
Calibrating is using adjustments to get a device to it’s maximum potential, profiling is a process to measure the potential of the device.
7. What is a Rendering Intent ?
The instructions for converting from one space to another, particularly useful when colours are found outside of one of the gamuts of the devices used in converting process.
8. Which Rendering Intents are most useful to photographers, and when would you use each of them ?
Absolute Colourimetric (used for proofing purposes, eg. Simulating on one printer what another will look like), Relative Colourimetric (brings out of gamut colours into boundary of target space, does not adjust any other colours), Perceptual (takes out of gamut colours and assigns them to closest in gamut colour, as well as changing other colours proportionately, maintains differences between colours)
Gamut: The range of colours a device can produce.
Colour Management Workflow Diagram by Geoff Woolfenden
Tutorial: In small groups calibrate a computer monitor.
We ran the calibration process twice. Below are screenshots from the first process.
Before the Calibration Process
After the Calibration Process
The second time we ran the calibration process we ticked the box native white point. The native white point is supposed to preserves the maximum possible color range on LCD monitors.
Below are two more screen shots for comparrison.
After the Calibration Process Using Native White Point
Colour Management – Questions
1. What is the purpose of colour management ?
To maintain consistent colour appearance across different devices and throughout the working process.
2. What problem makes colour management necessary ?
Different devices each have a different gamut, this is the range of colours that a device can produce.
3. What are the components of a device profile (ie what information do they contain) ?
The colour gamut of that device and the instructions which can be used to convert a colour space into or out of that gamut.
4. What is the difference between a device profile and a working space ?
A device profile relates specifically to a device and the colour space it uses is the gamut of the device. The working space is a range of colours that doesn’t specifically relate to a device.
5. What is a ‘reference colour space’ and how are they used ? Give an example of one.
This is a defined device independent space that is used as a reference point in the convertion process between two colour spaces.
6. What is the difference between ‘calibrating’ and ‘profiling’ ?
Calibrating is using adjustments to get a device to it’s maximum potential, profiling is a process to measure the potential of the device.
7. What is a Rendering Intent ?
The instructions for converting from one space to another, particularly useful when colours are found outside of one of the gamuts of the devices used in converting process.
8. Which Rendering Intents are most useful to photographers, and when would you use each of them ?
Absolute Colourimetric (used for proofing purposes, eg. Simulating on one printer what another will look like), Relative Colourimetric (brings out of gamut colours into boundary of target space, does not adjust any other colours), Perceptual (takes out of gamut colours and assigns them to closest in gamut colour, as well as changing other colours proportionately, maintains differences between colours)
Gamut: The range of colours a device can produce.
Colour Management Workflow Diagram by Geoff Woolfenden
Tutorial: In small groups calibrate a computer monitor.
We ran the calibration process twice. Below are screenshots from the first process.
Before the Calibration Process
After the Calibration Process
The second time we ran the calibration process we ticked the box native white point. The native white point is supposed to preserves the maximum possible color range on LCD monitors.
Below are two more screen shots for comparrison.
After the Calibration Process Using Native White Point
Week 1 : 16.2.2011 - Introduction
Week 1 : 16.2.2011 - Introduction
This year Technology 3 will be split up into three classes; Imaging, Studio and Location. A lot of our information will come from eLearn.
Available at http://elearn.cit.act.edu.au/
This semester we will be receiving three formative assessments and four summative assessments.
In this class the focus will be on calibrating, colour management and editing techniques. I look forward to expanding my knowledge of this subject.
This year Technology 3 will be split up into three classes; Imaging, Studio and Location. A lot of our information will come from eLearn.
Available at http://elearn.cit.act.edu.au/
This semester we will be receiving three formative assessments and four summative assessments.
In this class the focus will be on calibrating, colour management and editing techniques. I look forward to expanding my knowledge of this subject.
Subscribe to:
Comments (Atom)